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Flash Flood Warning


FLASH FLOOD WARNING
COC029-037-045-051-077-097-103-107-070115-
/O.NEW.KGJT.FF.W.0001.150506T2211Z-150507T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
411 PM MDT WED MAY 6 2015

THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN EAGLE COUNTY IN NORTHWESTERN COLORADO...
  CENTRAL DELTA COUNTY IN WEST CENTRAL COLORADO...
  MESA COUNTY IN WEST CENTRAL COLORADO...
  NORTHWESTERN PITKIN COUNTY IN WEST CENTRAL COLORADO...
  NORTHWESTERN GUNNISON COUNTY IN WEST CENTRAL COLORADO...
  SOUTHWESTERN ROUTT COUNTY IN NORTHWESTERN COLORADO...
  CENTRAL RIO BLANCO COUNTY IN NORTHWESTERN COLORADO...
  GARFIELD COUNTY IN NORTHWESTERN COLORADO...

* UNTIL 715 PM MDT

* AT 409 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN WITH RAINFALL RATES EXCEEDING ONE INCH AN HOUR.  MANY
  AREAS IN THE WARNED AREA HAVE ALREADY RECEIVED ONE INCH OF RAIN
  DURING THE PAST 24 HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GRAND JUNCTION...GLENWOOD SPRINGS...FRUITA...RIFLE...GYPSUM...
  CARBONDALE...NEW CASTLE...BASALT...SILT...PALISADE...MEEKER...
  PARACHUTE...COLLBRAN...DE BEQUE...SNOWMASS...MESA...RIO BLANCO...
  BATTLEMENT MESA...EMMA AND WHITEWATER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

SIGNIFICANT PONDING OF WATER WILL OCCUR ON STREETS AND HIGHWAYS.
EXERCISE EXTREME CAUTION.

&&

LAT...LON 3933 10680 3871 10869 3969 10901 4025 10723

$$

PF


Special Weather Statement


SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
318 PM MDT WED MAY 6 2015

WYZ001-012-013-023-062300-
JACKSON HOLE-STAR VALLEY-TETON AND GROS VENTRE MOUNTAINS-
YELLOWSTONE NATIONAL PARK-
318 PM MDT WED MAY 6 2015

SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE DEVELOPING OVER THE
MOUNTAINS...MOVING TO THE NORTHEAST AT AROUND 25 MPH THIS AFTERNOON.
EXPECT STRONGER STORMS TO PRODUCE SMALL HAIL AND BRIEF HEAVY
DOWNPOURS. ANY OF THESE STORMS COULD PRODUCE DANGEROUS CLOUD TO
GROUND LIGHTNING.

$$

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
318 PM MDT WED MAY 6 2015

WYZ030-062300-
EAST SWEETWATER COUNTY-
318 PM MDT WED MAY 6 2015

SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE DEVELOPING ACROSS
THE REGION EAST OF ROCK SPRINGS THIS AFTERNOON...MOVING TO THE
NORTHEAST AT 15 TO 20 MPH. EXPECT STRONGER STORMS TO PRODUCE SMALL
HAIL AND BRIEF HEAVY DOWNPOURS. ANY OF THESE STORMS COULD PRODUCE
DANGEROUS CLOUD TO GROUND LIGHTNING.

$$

JB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
238 PM MDT WED MAY 6 2015

NEZ002-003-019>021-054-055-095-096-WYZ101>119-071200-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS-
NIOBRARA COUNTY-NORTH LARAMIE RANGE-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
INCLUDING THE CITIES OF...CHADRON...ALLIANCE...SCOTTSBLUFF...
GERING...HARRISBURG...BRIDGEPORT...BAYARD...KIMBALL...SIDNEY...
HARRISON...AGATE...DOUGLAS...GLENROCK...LUSK...MUDDY GAP...
MEDICINE BOW...BORDEAUX...GLENDO...WHEATLAND...CHUGWATER...
GUERNSEY...TORRINGTON...RAWLINS...SINCLAIR...HANNA...ARLINGTON...
ELK MOUNTAIN...BAGGS...DIXON...SARATOGA...ENCAMPMENT...
RIVERSIDE...CENTENNIAL...ALBANY...WOODS LANDING...LARAMIE...
VEDAUWOO...BUFORD...PUMPKIN VINE...HORSE CREEK...HARRIMAN...
WHITAKER...CHEYENNE...BURNS...CARPENTER...ALBIN...PINE BLUFFS
238 PM MDT WED MAY 6 2015

...WINTER STORM CONDITIONS POSSIBLE SATURDAY NIGHT AND SUNDAY...

THERE IS GREATER CONFIDENCE IN THE RETURN OF WINTER WEATHER TO
MUCH OF SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE
SATURDAY NIGHT AND SUNDAY. THE FORECAST MODELS ARE IN GOOD
AGREEMENT TRACKING A STRONG SURFACE LOW PRESSURE SYSTEM FROM
EASTERN COLORADO SATURDAY AFTERNOON INTO CENTRAL NEBRASKA SUNDAY.
THIS LOW PRESSURE SYSTEM MAY INTERACT WITH ABUNDANT MOISTURE TO
PRODUCE WIDESPREAD HEAVY SNOWFALL.

WIDESPREAD RAIN IS LIKELY SATURDAY AFTERNOON FOR AREAS ALONG AND
EAST OF THE LARAMIE RANGE. AS THE UPPER LEVEL LOW MOVES INTO
NORTHEAST COLORADO SATURDAY NIGHT AND SUNDAY...IT WILL DRAW MUCH
COLDER AIR SOUTH ACROSS SOUTHEAST WYOMING AND THE WESTERN
NEBRASKA PANHANDLE. SNOW LEVELS WILL START AROUND 7500 TO 8000
FEET...THEN DROP TO 5500 FEET EARLY SUNDAY MORNING. WINDS BEHIND
THE ASSOCIATED COLD FRONT MAY BE QUITE STRONG...WITH SUSTAINED
NORTH TO NORTHEAST WINDS OF 25 TO 35 MPH GUSTING TO AROUND 40 MPH
LATE SATURDAY AFTERNOON THROUGH SUNDAY. THIS IS A FAVORABLE
PATTERN FOR WIDESPREAD HEAVY SNOW AND BLOWING SNOW FOR MUCH OF
SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE. TRAVEL
ACROSS INTERSTATES 25 AND 80 COULD BE SIGNIFICANTLY IMPACTED
SATURDAY NIGHT AND SUNDAY.

THERE IS THE POSSIBILITY THAT THE LOW PRESSURE SYSTEM COULD TRACK
FURTHER NORTH...WHICH WOULD MEAN THE HEAVIEST SNOW WOULD BE
FURTHER NORTH AND MUCH OF SOUTHEAST WYOMING AND THE WESTERN
NEBRASKA PANHANDLE WOULD MOST LIKELY EXPERIENCE LIGHT RAIN AND
SNOW. IF PLANNING TRAVEL FOR THE MOTHERS DAY WEEKEND ACROSS
SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE...STAY TUNED
FOR LATER UPDATES AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE
IN CHEYENNE ON THIS POTENTIAL WINTER STORM.

$$

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1138 AM MDT WED MAY 6 2015

WYZ002-008-009-014-015-070600-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
WIND RIVER MOUNTAINS WEST-
1138 AM MDT WED MAY 6 2015

...WINTER RETURNS TO THE HIGH MOUNTAINS...

LIGHT SNOW WILL RETURN TO THE MOUNTAINS TONIGHT...WITH SNOW LEVELS
DROPPING TO AROUND 9500 FEET BY MIDNIGHT...TO PERHAPS AS LOW AS
7500...WITH RAIN MIXING WITH SNOW FOR A SHORT PERIOD DOWN TO 7000
FEET BY SUNRISE. LIGHT SNOW WILL THEN CONTINUE THROUGH THE DAY
THURSDAY ABOVE 7500 FEET. NEW SNOWFALL OF BETWEEN 1 TO 4 INCHES IS
EXPECTED BY THURSDAY EVENING...WITH ISOLATED AREAS ABOVE 9500 FEET
PICKING UP TO 6 INCHES. MOUNTAIN PASSES WILL BE AFFECTED MOST...AND
WILL BECOME SLUSHY AND SLICK AT TIMES. MOTORISTS SHOULD TAKE
CAUTION...ESPECIALLY BETWEEN 3 AM AND 9 AM THURSDAY.

$$

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1138 AM MDT WED MAY 6 2015

WYZ019-020-022-026-070600-
CASPER MOUNTAIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-UPPER GREEN RIVER BASIN-
1138 AM MDT WED MAY 6 2015

...RAIN MAY MIX WITH SNOW BY SUNRISE THURSDAY...

LIGHT SNOW WILL RETURN TO THE MOUNTAINS TONIGHT...WITH RAIN MIXING
WITH SNOW DOWN TO 6500 FEET BY SUNRISE FOR A SHORT PERIOD OF TIME.
WHILE NO ACCUMULATION IS EXPECTED ON THE RELATIVELY WARM ROADWAYS IN
THE AREA...VISIBILITY MAY BE IMPACTED AND REDUCED FOR A SHORT PERIOD
OF TIME JUST BEFORE AND AFTER SUNRISE.

$$

JB


Hazardous Weather Outlook


HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1120 AM MDT WED MAY 6 2015

NEZ002-003-019>021-054-055-095-096-071245-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
1120 AM MDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN
NEBRASKA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EARLY
EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT CHANCE FOR AFTERNOON AND EVENING THUNDERSTORMS
THURSDAY THROUGH SATURDAY.

A STRONG LOW PRESSURE SYSTEM WILL MOVE THROUGH NORTHERN COLORADO
OVER THE WEEKEND. THIS SYSTEM WILL LIKELY BE COLD ENOUGH TO PRODUCE
SOME ACCUMULATING SNOW OVER MUCH OF THE WESTERN NEBRASKA PANHANDLE
LATE SATURDAY NIGHT AND SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE REQUIRED THIS AFTERNOON AND TONIGHT.

$$

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1120 AM MDT WED MAY 6 2015

WYZ101>119-071245-
CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY-
NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS-
SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
1120 AM MDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EARLY
EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT CHANCE FOR AFTERNOON AND EVENING THUNDERSTORMS
THURSDAY THROUGH SATURDAY.

A STRONG LOW PRESSURE SYSTEM WILL MOVE THROUGH NORTHERN COLORADO
OVER THE WEEKEND. THIS SYSTEM WILL LIKELY BE COLD ENOUGH TO PRODUCE
SNOW ACROSS MUCH OF SOUTHEAST WYOMING SATURDAY AFTERNOON THROUGH
SUNDAY. SIGNIFICANT SNOW ACCUMULATIONS AND BLOWING SNOW WILL BE
POSSIBLE WITH THE CURRENT FORECASTED TRACK OF THIS SYSTEM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE REQUIRED THIS AFTERNOON AND TONIGHT.

$$

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1110 AM MDT WED MAY 6 2015

COZ030>051-071715-
JACKSON COUNTY BELOW 9000 FEET-
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
1110 AM MDT WED MAY 6 2015


THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

AN AREA OF RAIN WILL CONTINUE TO MOVE SLOWLY EAST ACROSS THE
NORTHEAST PLAINS THIS AFTERNOON. ANOTHER ROUND OF SHOWERS AND
A FEW THUNDERSTORMS WILL DEVELOP OVER THE MOUNTAINS AND SPREAD
INTO THE FRONT RANGE CITIES DURING THE AFTERNOON. RAINFALL MAY BE
PERSISTENT...BUT WILL MAINLY BE LIGHT. A FEW OF THE HEAVIER
SHOWERS COULD STILL PRODUCE ENOUGH RAIN TO CAUSE MINOR FLOODING.
THE SNOW LEVEL WILL BE BETWEEN 10 AND 11 THOUSAND FEET WITH A FEW
INCHES OF SNOW ACCUMULATING ABOVE TIMBERLINE. THE MOUNTAIN PASSES
WILL MAINLY BE WET BUT COULD HAVE SOME SLUSH AT TIMES.

PRECIPITATION WILL GRADUALLY DECREASE OVERNIGHT WITH AREAS OF FOG
DEVELOPING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THE COOL AND WET WEATHER PATTERN IS EXPECTED TO CONTINUE THROUGH
THIS WEEKEND. MOIST SOUTHWEST FLOW ALOFT WILL CONTINUE THURSDAY
AND FRIDAY WITH DAYTIME HEATING CAUSING SHOWERS AND THUNDERSTORMS
TO DEVELOP. TEMPERATURES WILL BE COOLER THAN NORMAL. THE THREAT OF
SEVERE WEATHER WILL BE MINIMAL...BUT LOCALLY HEAVY RAINFALL WILL
BE POSSIBLE EACH DAY WHICH MAY CAUSE SOME FLOODING PROBLEMS.

OVER THE WEEKEND...AN UPPER LEVEL WEATHER DISTURBANCE IS FORECAST
TO MOVE ACROSS THE STATE WHICH WILL INCREASE THE COVERAGE AND
INTENSITY OF RAINFALL. THIS WEATHER SYSTEM WILL BRING EVEN COOLER
TEMPERATURES TO THE STATE...DROPPING SNOW LEVELS DOWN TO THE
LOWER FOOTHILLS. PERIODS OF ACCUMULATING SNOW IN THE MOUNTAINS
THURSDAY AND FRIDAY WILL EXTEND DOWN TO FOOTHILL LOCATIONS FROM
FRIDAY NIGHT THROUGH SUNDAY AFTERNOON. TRAVEL IN THE MOUNTAINS MAY
BECOME DIFFICULT AT TIMES DUE TO SNOW COVERED ROADS.

A DRYING TREND IS EXPECTED EARLY NEXT WEEK AS AN UPPER RIDGE
BUILDS OVER UTAH AND WESTERN COLORADO. TEMPERATURES WILL ALSO
GRADUALLY RETURN TO SEASONAL NORMALS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

$$

GIMMESTAD/COOPER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
549 AM MDT WED MAY 6 2015

UTZ001>016-019>021-517-518-WYZ021-071200-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
549 AM MDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

SCATTERED LIGHT RAIN SHOWERS WILL CONCENTRATE ACROSS SOUTHWEST
UTAH THIS MORNING...THEN SPREAD NORTH INTO CENTRAL UTAH LATER IN
THE MORNING. THESE SHOWERS WILL BECOME MORE WIDESPREAD AND
LOCALLY HEAVY AS THEY CONTINUE NORTH INTO NORTHERN UTAH THIS
AFTERNOON THROUGH EARLY EVENING. ISOLATED THUNDERSTORMS ARE ALSO
POSSIBLE WITH SMALL HAIL AND HEAVY RAIN THE MAIN IMPACT. SHOWERS
AND ISOLATED THUNDERSTORMS WILL EXIST PRIMARILY ACROSS THE
NORTHERN THIRD OF UTAH BY LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A NEW PACIFIC STORM SYSTEM WILL MOVE SOUTH OUT OF THE PACIFIC
NORTHWEST AND INTO CENTRAL CALIFORNIA BY THURSDAY. DRIER AIR
AHEAD OF THE STORM WILL SPREAD ACROSS MUCH OF THE OUTLOOK AREA
ON THURSDAY. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL BE
LIMITED MAINLY TO THE FAR NORTHERN PORTION OF THE OUTLOOK AREA
THROUGH THURSDAY.

THE STORM WILL TURN EAST FROM CALIFORNIA AND CROSS THE SOUTHERN
GREAT BASIN BEGINNING FRIDAY. VALLEY RAIN AND HIGH ELEVATION SNOW
WILL INCREASE ACROSS THE OUTLOOK AREA LATE FRIDAY...THEN CONTINUE
THROUGH SATURDAY NIGHT. SIGNIFICANT RAINFALL IS POSSIBLE WITH
THIS STORM...ESPECIALLY ACROSS NORTHERN AND CENTRAL UTAH. HIGHER
MOUNTAIN ELEVATIONS WILL SEE ACCUMULATING SNOWS THROUGH SATURDAY
EVENING.

THE STORM WILL BEGIN TO WIND DOWN EARLY SUNDAY. VALLEY RAIN AND
MOUNTAIN SNOW WILL DECREASE IN AREAL COVERAGE AND INTENSITY DURING
THE DAY SUNDAY. HIGH PRESSURE ALOFT WILL RETURN TO THE OUTLOOK
AREA EARLY IN THE UPCOMING WEEK.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

$$

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/ (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
437 AM MDT WED MAY 6 2015

COZ001>014-017>023-UTZ022>025-027>029-071045-
LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN-
ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS-
UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR-
CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS-
GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS-
CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN-
WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS-
UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-
NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS-
PARADOX VALLEY/LOWER DOLORES RIVER-
FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN-
SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS-
EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT-
LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES-
437 AM MDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN
COLORADO.

.DAY ONE...TODAY AND TONIGHT

NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS WILL SWEEP OVER THE
REGION AGAIN TODAY INTO TONIGHT AS REMNANTS OF THE PACIFIC LOW
LINGER. STRONGER STORM CELLS WILL BE CAPABLE OF GENERATING BRIEF
HEAVY RAIN AND WIND GUSTS TO 35 MPH. EXPECT SNOW IN THE HIGH
PASSES ABOVE 10000 FEET...MAINLY THIS MORNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THURSDAY AND FRIDAY...MILDER WITH DECREASED CHANCES FOR SHOWERS
AND THUNDERSTORMS. PRECIPITATION LARGELY CONFINED TO THE HIGHER
TERRAIN.

SATURDAY AND SUNDAY...SHOWERS AND THUNDERSTORMS INCREASE AS
ANOTHER PACIFIC SYSTEM MOVES OVER THE AREA.

MONDAY AND TUESDAY...DECREASED SHOWER AND THUNDERSTORM ACTIVITY
IMPACTING MAINLY THE MOUNTAINS DURING THE AFTERNOON AND EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

$$

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
421 AM MDT WED MAY 6 2015

WYZ001>020-022>030-071200-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
421 AM MDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

TODAY...ISOLATED THUNDERSTORMS WEST OF THE DIVIDE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THURSDAY...ISOLATED THUNDERSTORMS POSSIBLE ACROSS THE FAR
SOUTH.

FRIDAY...ISOLATED THUNDERSTORMS POSSIBLE ALONG AND WEST OF THE
DIVIDE.

SATURDAY AND SUNDAY...HEAVY SNOW POSSIBLE ABOVE 6000 TO 7000 FEET
ALONG AND EAST OF THE CONTINENTAL DIVIDE SATURDAY WITH SNOW LEVELS
LOWERING TO BETWEEN 5000 AND 5500 FEET SATURDAY NIGHT AND
SUNDAY ACROSS THE CENTRAL BASINS. SIGNIFICANT SNOW MAY ALSO FALL
ACROSS THE LOWER ELEVATIONS OF CENTRAL WYOMING SATURDAY NIGHT AND
SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY HEAVY RAIN AMOUNTS OVER HALF
AN INCH TODAY. THANK YOU.

$$

TEAM RIVERTON

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
228 AM MDT WED MAY 6 2015

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-070830-
HARDING-PERKINS-BUTTE-NORTHERN MEADE CO PLAINS-ZIEBACH-
NORTHERN BLACK HILLS-NORTHERN FOOT HILLS-RAPID CITY-
SOUTHERN FOOT HILLS-CENTRAL BLACK HILLS-SOUTHERN BLACK HILLS-
CUSTER CO PLAINS-PENNINGTON CO PLAINS-HAAKON-FALL RIVER-SHANNON-
JACKSON-BENNETT-MELLETTE-TODD-TRIPP-STURGIS/PIEDMONT FOOT HILLS-
SOUTHERN MEADE CO PLAINS-HERMOSA FOOT HILLS-NORTHERN CAMPBELL-
SOUTHERN CAMPBELL-WESTERN CROOK-WYOMING BLACK HILLS-WESTON-
NORTHEASTERN CROOK-
228 AM MDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

RAIN SHOWERS AND ISOLATED TO SCATTERED THUNDERSTORMS WILL OCCUR
ACROSS THE REGION TODAY AND TONIGHT. SEVERE THUNDERSTORMS ARE
NOT EXPECTED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SEVERAL DISTURBANCES WILL CROSS THE AREA DURING THE REST OF THIS
WEEK THROUGH THE WEEKEND...PRODUCING DAILY CHANCES FOR
SHOWERS.

A LARGE LOW PRESSURE SYSTEM WILL AFFECT THE ENTIRE REGION
SATURDAY AND SUNDAY WITH LIQUID PRECIPITATION AMOUNTS IN EXCESS OF
ONE INCH POSSIBLE. COLDER AIR WRAPPING INTO THE SYSTEM SATURDAY
NIGHT AND SUNDAY COULD LEAD TO ACCUMULATING SNOW OVER THE HIGHER
ELEVATIONS OF THE BLACK HILLS. CONFIDENCE IS HIGH WITH THE
PRECIPITATION...BUT CONFIDENCE IS LOW WITH REGARDS TO THE
CHANGEOVER TO SNOW AND SUBSEQUENT POTENTIAL SNOWFALL
ACCUMULATIONS. STAY TUNED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

&&

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES...
OR CHECK OUR WEB SITE AT WEATHER.GOV/RAPIDCITY

$$


Hydrologic Outlook


HYDROLOGIC OUTLOOK
WYC001-007-015-081609-

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1009 AM MDT WED MAY 6 2015

...MODERATE RAIN EXPECTED OVER WATERSHEDS IN SOUTHEAST WYOMING FRIDAY
NIGHT THROUGH SATURDAY NIGHT...

...MINOR FLOODING POSSIBLE ALONG SMALL CREEKS AND STREAMS SATURDAY
AFTERNOON THROUGH SUNDAY AFTERNOON...

ACTIVE SNOWMELT RUNOFF HAS BEEN ONGOING ALONG CREEKS AND RIVERS
ACROSS SOUTHEAST WYOMING FOR OVER A WEEK. RECENT RAINFALL COUPLED
WITH SNOWMELT HAS ALSO INCREASED SOIL MOISTURE ACROSS A MAJORITY OF
WATERSHEDS IN SOUTHEAST WYOMING.

MODERATE RAIN IS EXPECTED TO START IN SOUTHEAST WYOMING FRIDAY NIGHT
AND LAST THROUGH SATURDAY NIGHT.  ONE TO ONE AND A HALF INCHES OF
RAIN IS POSSIBLE ACROSS DRAINAGES WITH ISOLATED AREAS OF TWO INCHES
OF RAIN OVER OROGRAPHICALLY FAVORED WATERSHEDS.  AT THIS TIME, THE
HEAVIEST RAIN IS EXPECTED OVER THE LARAMIE AND MEDICINE BOW
WATERSHEDS.

RAINFALL RUNOFF COUPLED WITH SNOWMELT RUNOFF AND SATURATED SOILS
WILL ALLOW SMALL CREEKS AND STREAMS ACROSS SOUTHEAST WYOMING TO FLOW
AT HIGH LEVELS BEGINNING SATURDAY AFTERNOON. MINOR FLOODING IS
POSSIBLE ALONG SMALL STREAMS AND CREEKS SATURDAY AFTERNOON THROUGH
SUNDAY AFTERNOON.

SNOW LEVELS ON FRIDAY NIGHT THROUGH SATURDAY MORNING ARE EXPECTED TO
BE 7500 TO 8500 FEET, DROPPING TO 5500 FEET BY EARLY SUNDAY MORNING.
 ACTIVE SNOWMELT RUNOFF AND RAINFALL RUNOFF WILL DRASTICALLY SLOW
DOWN BY EARLY SUNDAY MORNING.

LOCAL RAINFALL RUNOFF COULD CAUSE TO THE LARAMIE RIVER AT LARAMIE TO
RISE TO NEAR BANKFULL CONDITIONS BY SATURDAY NIGHT. MINOR FLOODING
IS POSSIBLE WITH BANKFULL CONDITIONS ALONG THE LARAMIE RIVER.  THE
RIVER MAY SLOWLY RECEDE SUNDAY AFTERNOON THROUGH EARLY MONDAY. A
SECOND RISE IN THE RIVER EXPECTED BY TUESDAY AS RAINFALL RUNOFF FROM
THE UPPER PORTIONS OF THE BASIN MAKE IT DOWN TO THE LARAMIE RIVER AT
LARAMIE.

STAY TUNED FOR FLOOD WATCHES,ADVISORIES AND EVEN WARNINGS AS
CONFIDENCE GROWS WITH PRECIPITATION AMOUNT FORECASTS.

GRAPHICAL FORECASTS ARE AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=CYS
VISIT WEATHER.GOV/CHEYENNE AND SELECT THE RIVERS & LAKES TAB FOR
GRAPHICAL FORECASTS AND ADDITIONAL INFORMATION.


$$

JTFAHEY


Short Term Forecast


SHORT TERM FORECAST
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
351 PM MDT WED MAY 6 2015

COZ030>034-037-070000-
JACKSON COUNTY BELOW 9000 FEET-
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-CENTRAL AND SOUTHEAST PARK COUNTY-
INCLUDING...GOULD...NORTH PARK...RAND...SPICER...WALDEN...
EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS...
RABBIT EARS PASS...DILLON...FRASER...GRANBY...GRAND LAKE...
HOT SULPHUR SPRINGS...KREMMLING...CAMERON PASS...
LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE...
ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...
BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE...
EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL...
INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS...
WILLIAMS FORK MOUNTAINS...WINTER PARK...FAIRPLAY...HARTSEL...
LAKE GEORGE...SOUTH PARK
351 PM MDT WED MAY 6 2015

.NOW...
SCATTERED RAIN AND SNOW SHOWERS WILL CONTINUE OVER THE NORTHERN
COLORADO MOUNTAINS THIS AFTERNOON. A FEW THUNDERSTORMS ARE ALSO
EXPECTED. SOME OF THE SHOWERS WILL PRODUCE BRIEF HEAVY RAIN AND
WIND GUSTS TO 40 MPH. THE SNOW LEVEL WILL BE BETWEEN 10 AND 11
THOUSAND FEET WITH HIGHER ELEVATIONS PICKING UP AN INCH OR TWO OF
SNOW. ROADS WILL GENERALLY BE WET...BUT THE SUMMIT OF THE PASSES
COULD BE SLUSHY AT TIMES.

$$

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
351 PM MDT WED MAY 6 2015

COZ035-036-038>043-045-070000-
LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND...
RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN...
GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FORT COLLINS...
HEREFORD...LOVELAND...NUNN...ARVADA...BOULDER...GOLDEN...
LAKEWOOD...LONGMONT...AURORA...BRIGHTON...CITY OF DENVER...
DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON...
PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR...
BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER...STONEHAM...EATON...
FORT LUPTON...GREELEY...ROGGEN...BENNETT...BYERS...DEER TRAIL...
LEADER
351 PM MDT WED MAY 6 2015

.NOW...
SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL CONTINUE OVER THE
FOOTHILLS AND MOVE EAST ACROSS THE URBAN CORRIDOR AND ADJACENT
PLAINS THROUGH LATE AFTERNOON. SOME OF THE SHOWERS WILL PRODUCE
BRIEF RAIN AND WIND GUSTS TO 30 MPH. RAINFALL RATES WILL BE UP TO
A QUARTER INCH IN LESS THAN AN HOUR WITH THE HEAVIER SHOWERS.

$$

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
333 PM MDT WED MAY 6 2015

UTZ001>011-062345-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-
333 PM MDT WED MAY 6 2015

.NOW...
SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE
NORTHERLY ACROSS PORTIONS OF NORTHERN UTAH THROUGH THIS
AFTERNOON. THE STRONGEST ACTIVITY AT 330 PM WAS CONCENTRATED IN
BOX ELDER COUNTY AND OVER THE GREAT SALT LAKE. EXPECT LOCALLY
HEAVY RAINFALL...SMALL HAIL...GUSTY WINDS AND CLOUD TO GROUND
LIGHTNING WITH THE STRONGEST STORMS.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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